# Somryst vs AASM Link

The clearest difference is rating: AASM Link at 5.0 against Somryst's 3.2. AASM Link also leads on update cadence (every 9 days vs every 8 months). Somryst's advantage is in-app purchases (none vs 4). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. AASM Link sells 2 in-app purchases, starting at $17.49 per month. Somryst asks for nothing beyond the download.

AASM Link holds the better App Store score, 5.0 against 3.2. Both are backed by a comparable volume of ratings — 5 and 3 respectively.

Somryst ships an update every 8 months, AASM Link every 9 days. The most recent releases landed on September 17, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Somryst | AASM Link |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.2 (5 ratings)](https://appshunter.io/ios/app/somryst/id6484252292/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/aasm-link/id6745556028/reviews)** |
| Number of ratings | **5** | 3 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 9 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 144 MB | 166 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [KOEO](https://appshunter.io/developer/969565829) | [American Academy of Sleep Medicine](https://appshunter.io/developer/476461157) |

## What reviewers say

### Somryst

[App page](https://appshunter.io/ios/app/somryst/id6484252292)

This app provides digital Cognitive Behavioral Therapy for Insomnia (CBT-I). It helps users manage sleep problems by addressing behaviors, habits, routines, and thoughts. The program is designed to be used under the guidance of a healthcare provider.

**Highlights:** Digital CBT-I program, Behavioral and thought pattern analysis, Progress tracking, Insights into sleep habits, Healthcare provider guidance

**In-app purchases:** none


### AASM Link

[App page](https://appshunter.io/ios/app/aasm-link/id6745556028)

This AI-powered medical tool provides sleep medicine professionals with instant access to clinical guidelines, standards of care, and quality measures. It features AI-enhanced search, study tools for board exams, and automatic updates for new or revised standards. Expert-curated reading lists are also available to tailor content to specific clinical interests.

**Highlights:** AI-enhanced guideline search, Board examination study tools, Automatic updates for standards, Expert-curated reading lists, Access to clinical practice guidelines, Quality measure information

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Member Sub - Monthly | $17.49 | per month |
| Non-Member Sub - Monthly | $24.99 | per month |


## Frequently asked questions

### Is Somryst free?

Somryst is free to download, with no in-app purchases.

### Is AASM Link free?

AASM Link is free to download, with in-app purchases available.

### Which has better reviews, Somryst or AASM Link?

AASM Link is rated higher. Somryst averages 3.2 out of 5 from 5 ratings, while AASM Link averages 5.0 from 3 ratings.

### Do Somryst or AASM Link have ads?

Neither Somryst nor AASM Link shows ads.

### Which is updated more often, Somryst or AASM Link?

Somryst ships an update every 8 months, and AASM Link every 9 days. Most recently, Somryst was updated on September 17, 2026 and AASM Link on September 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*